I see alot of racers switching to the QC2. However, this is a topic that will spark answers from both ends of the field. You will have your supporters and critics of both. I personally use a QC2 in my CRC Carpet Knife and a GT7 in my TC. Prior to having my GT7, I was running the original Novak Cylone (Yes, the yellow labeled one
) which lasted me for 3 full years of abuse. IMO, it is a matter of preference. You will have to draw your own conclusions once you have the product in your hands and installed in your vehicle.